I've been using 64-bit Ubuntu Studio 10.04 for a few years. Since it's reaching the end of its lifespan in a few months, I've decided to install 12.04. However, I understand that Ubuntu Studio 12.04 doesn't have full disk encryption available from the installer, so what I need to do is install regular Ubuntu with disk encryption from the alternate installer and upgrade from that to Ubuntu Studio. So my question is, what's the proper way to fully upgrade vanilla Ubuntu 12.04 to Ubuntu Studio? (The guide here is under construction and appears to be somewhat outdated, as it still refers to linux-rt and Karmic.) Thanks!